390755480

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{65563}}^1$

素因数の和:65723

約数の個数: 32

約数和(自身を含む): 885114000

約数和(自身を除く): 494358520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 5960, 65563, 131126, 262252, 327815, 524504, 655630, 1311260, 2622520, 9768887, 19537774, 39075548, 48844435, 78151096, 97688870, 195377740, 390755480]

約数ペア:

[(1, 390755480), (2, 195377740), (4, 97688870), (5, 78151096), (8, 48844435), (10, 39075548), (20, 19537774), (40, 9768887), (149, 2622520), (298, 1311260), (596, 655630), (745, 524504), (1192, 327815), (1490, 262252), (2980, 131126), (5960, 65563)]